10101012220221 has 16 divisors (see below), whose sum is σ = 14504936233536. Its totient is φ = 6215613797376.

The previous prime is 10101012220219. The next prime is 10101012220309. The reversal of 10101012220221 is 12202221010101.

It is not a de Polignac number, because 10101012220221 - 2¹ = 10101012220219 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10101012220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101012222221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7578340 + ... + 8810973.

It is an arithmetic number, because the mean of its divisors is an integer number (906558514596).

Almost surely, 2^{10101012220221} is an apocalyptic number.

It is an amenable number.

10101012220221 is a deficient number, since it is larger than the sum of its proper divisors (4403924013315).

10101012220221 is a wasteful number, since it uses less digits than its factorization.

10101012220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16405132.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10101012220221 its reverse (12202221010101), we get a palindrome (22303233230322).

The spelling of 10101012220221 in words is "ten trillion, one hundred one billion, twelve million, two hundred twenty thousand, two hundred twenty-one".